Other Parts Discussed in Thread: OPA548
For a piece of measurement equipment, the OPA548 is considered as an output driver. One of the requirements of the equipment is relatively accurate and stable current limit. The OPA548 offers current limitation but with borderline (for me) stability (over temperature/loads). From the datasheet it is not clear for me how the current limiter works within the opamp. The datasheet proposes an external resistor to set the current limit. However, it also suggests that the current out of the current limiting pin determines the current limit. This seems to suggest that a more stable current limit can be achieved by connecting a current source to that pin instead of a resistor. Have anyone ever tried this and what were your findings?